Alber, Ina ; Sigle, Wilfried ; Demming-Janssen, Frank ; Neumann, Reinhard ; Trautmann, Christina ; Aken, Peter A. van ; Toimil-Molares, Maria Eugenia (2012)
Multipole Surface Plasmon Resonances in Conductively Coupled Metal Nanowire Dimers.
In: ACS Nano, 6 (11)
Article
Abstract
We report on the experimental and the theoretical investigation of multipole surface plasmon resonances in metal nanowires conductively connected by small junctions. The influence of a conductive junction on the resonance energies of nanowire dimers was simulated using the finite element method based software CST Microwave Studio and experimentally measured by electron energy-loss spectroscopy in a transmission electron microscope. We extend the analysis of conductively connected structures to higher order multipole modes up to third order, including dark modes. Our results reveal that an increase in junction size does not shift significantly the antibonding modes, but causes a strong blue shift of the bonding modes, leading to an energetic rearrangement of the modes compared to those of a capacitively coupled dimer with similar dimensions.
| Item Type: | Article |
|---|---|
| Erschienen: | 2012 |
| Creators: | Alber, Ina ; Sigle, Wilfried ; Demming-Janssen, Frank ; Neumann, Reinhard ; Trautmann, Christina ; Aken, Peter A. van ; Toimil-Molares, Maria Eugenia |
| Type of entry: | Bibliographie |
| Title: | Multipole Surface Plasmon Resonances in Conductively Coupled Metal Nanowire Dimers |
| Language: | English |
| Date: | 27 November 2012 |
| Publisher: | ACS Publications |
| Journal or Publication Title: | ACS Nano |
| Volume of the journal: | 6 |
| Issue Number: | 11 |
| URL / URN: | 10.1021/nn303149p |
| Abstract: | We report on the experimental and the theoretical investigation of multipole surface plasmon resonances in metal nanowires conductively connected by small junctions. The influence of a conductive junction on the resonance energies of nanowire dimers was simulated using the finite element method based software CST Microwave Studio and experimentally measured by electron energy-loss spectroscopy in a transmission electron microscope. We extend the analysis of conductively connected structures to higher order multipole modes up to third order, including dark modes. Our results reveal that an increase in junction size does not shift significantly the antibonding modes, but causes a strong blue shift of the bonding modes, leading to an energetic rearrangement of the modes compared to those of a capacitively coupled dimer with similar dimensions. |
| Uncontrolled Keywords: | multipole order surface plasmon, nanowire dimer, conductive junction, electron energy-loss spectroscopy, finite element simulation, bonding mode, antibonding mode |
| Divisions: | 11 Department of Materials and Earth Sciences 11 Department of Materials and Earth Sciences > Earth Science 11 Department of Materials and Earth Sciences > Material Science |
| Date Deposited: | 20 Mar 2014 12:59 |
| Last Modified: | 05 Aug 2021 16:17 |
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